Please stop making sweeping generalizations. It is such a dangerous practice. Just because one Catholic family doesn't do yoga doesn't mean the Catholic church doesn't allow yoga. There are an estimated 1.2 billion Catholics in the world. It is complete and utter nonsense to judge 1.2 billion people based off the decision of one family. (It could also be hateful, ignorant, and bigoted.)
I'm a member of the Restored Church of Jesus Christ (new nickname for my Church, we don't like going by "Mormon" anymore because we want the focus to be on Jesus Christ, not Mormon.) Sometimes I do yoga. Sometimes I meditate. Unfortunately, there were some other members of the church who got offended when a school in Utah started offering yoga classes. I STRONGLY disagree with these people. I'm pretty sure 95+% of my local congregation would disagree as well (I hope its 100%!). The church has never made a statement about yoga. I can't fathom why these parents are so paranoid. Unfortunately, people read an article about a "Mormon" parent getting upset about yoga in schools and draw the conclusion that Mormons are against yoga. It is not true.
It is 2018. We have to find a way to stop making such ridiculous generalizations. I'm sure I'm guilty of it too with groups I'm not familiar with. So let's just try to do our best. Whenever you read a headline that has the intent to shock you, take a deep breath and stop and think. Realize headlines don't sell if they are full of common sense. Make sure you don't judge a group of people based of the behaviors of the fringe.
P.S. Did you know the word Catholic means "Universal" or "All embracing"? It is the intent of the Catholic church to bring diverse people together in one faith. If you have a congregation of 1.2 billion, 14 million, of 30... there is going to be variety in thought and practice. Try not judge a large group off of one individual!
